Some people are born with an extra hole in their ear. The tiny…

Some people are born with an extra hole in their ear. The tiny opening, which sits right where the cartilage meets the face, is a condition called preauricular sinus that scientists believe may be an ‘evolutionary remnant of gills’.

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Source: Weird Facts
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One theory that is often attached to cats’ love for…

One theory that is often attached to cats’ love for boxes is that they are inherently predators, speaking in evolutionary terms, so they like to assume a position that covers them sufficiently from each side in order to ambush their prey. Obviously, they’re not going to attack someone every time you see them playing with a box, but it’s their natural, instinctive behavior to act that way

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Source: Ultra Facts
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